Centrifugal separator.



PATENTED MAY 19, 1908.

' P. F. PEGK.

GENTRIFUGAL SBPARATOR.

lAPPLIATION EILED TUNE 3. 1907.

' zen of the United States, residing at Chicago,

PHILIP F. PECK, OF CHICAGO, ILLINOIS.

l cnn'rnrrucan snrnnaron.

speeicauon'nf Letters Patent.

Patented May 19, 1.908.

Application llled June 3, 1907. Serial No. 376,941.

To all 'whom rMuay concern: I

Be it' known that I, PHILIP F, PEOK, a citiin thecounty of Cook andState of Illinois, have invented certain new and useful Improvements inCentrifugal Separatorsf of which the followin is a specification.

My invention re ates more particularly to centrifugal se arators for theseparation of ores, or similar materials, of dierent de grees ofspecific avity while in a pulverized state and mixed with water, of theclass having a rotatable portion or vessel with a separatin surface onits inner wall and a differentia ly rotatable longitudinally-travelableinner deflector or core-l-the two to ether.

. forming'a se arating channel varia le in size, and whic se arator inits operation alternately. accumulates a charge or load of concentratesand middlings and then discharges them; and my invention consists in thefeatures, details and combinations of construction and in theassociation of parts hereinafter described and claimed. v

In the accompanying drawings-Figure 1 is chiefly a vertical centrallongitudinacross sectionofin separator, showing, however, a art of theeector and some other portions in side elevation. 2 is a top planviewreduced in -siae--of the treatment vessel belowthe u per ournal box,showing the loca- A tion of t e several annular feedchambers,

sel and some other` parts, similar to those illustrated in Fig. 1, withthe exception that the means for holding certain internal parts to placein the Vvessel are modified. In this gure there is also indicated indotted lines the drawn'or traveled out position of the delector Fig. 5is an enlarged to plan detail,` taken on line'B B of Fig. 1 looliing inthe direction of the arrows, showing the relative position of the forkedend of the lever under the separate and associated parts.

In making my improved centrifugal ore se arator, I provlde arotatable'portin 2, W ch'I term a .treatment vessel,vhav1ng preferablyasmooth interior circumferential Wall lforming a separating surface 3. lI prfer to have this treatment vessel in the form or of the nature of astrong frusto 'conethe separator.

shaped metal tube or tapering` shell, and to 'locate it in a verticalposition, as shown in the drawings. It may be made of one or morepieces, and need not be in the form of a vessel, as the term is usuallyapplied, but should be -ofa nature, when the separator is assembled andin operation, to maintain the separating surface 1n a submerged state,and ot erwise to subserve the purpose for which it is intended.

The treatment vessel is-provided with or formed in art of heads orends/4 and 5,' having centra hollow hubs 'or trunnions 6 and 7,

lrespectively. I also provide a substantial said hubs, around shaft 8extending through which they are rotata ly iournaled, thus affordingbearin s for lateral support of the treatment vesse. This shaft, .1nturn, is

' laterally supported by suitable journalboxes Q'and 10, the top of oneof whichis attached to a casting 11 above the upper hub, which castingis supported by'columns 12 that are securely mounted on the base housing13 of The lower journal box 10 engages the shaft below the lower hub,'and is secured to the v base housing, as shown. The shaft is mounted inits journal boxes 9 and 10 in a manner ada ted to be slid or traveledlongitudinally, as t esired, and is made long enough to extend throughsuch boxes sufliciently-as shown in Fig. 1to permit of 'a desired extentof longitudinal travel. It is stepped at yits lower end in a suitablebox 14, preferably of an anti-friction character, in a manner to4substantially maintain it therein against relative longitudinalmovement .to the box either u or down, so that, by the movement of thisox, the shaft will be forced with'it either up or down as the box may bemoved.

This box 14 is pivotall7 attached throughv links 15 to the forked end ofthe lever 16, as

shown in Figs. 1 and 5, which lever is fulcrumed at 17 to the basehousing. of the separater. The opposite end of the lever is se- `whichis securely and rotatably mounted in suitable journal boxes 21.

To the rod 20, between its journal boxes, l

is rigidly attached a worm wheel 22, for rotating the rod. This wormwheel' contacts at its hubs with the inner end of the journal boxes,thus. maintaining the rod against;

longitudinal travel.

lio

Mesliing with the teethon' the worm Wheel is a Worm 23 carriedahd`lotated by an adequate', suitably journaled shai't 24, which may berotated in either one direction or the' '5 other by loosely mountedclutch pulleys 25 and 26. These pulleys may be rdriven in" oppositedirections by belts-not shownrunnin in such manner that the movement 'ofthe ever 27 brings the clutch 28 into engagement with either one or theother ot'the said ulleys,l and thereby revolves the threaed rod in thedirection desired, thus forcing the nutt19 up' Aor down and rocking thelever 16 correspondingly and eiiec'ting a desired longitudinal movementor travel of the shaft 8 and the de'llector.'

`The base housing .ofthe separator is pro- -'vided with two spn'allyinclined troughs or 'compartments 29 and 30, as shown in Fig. l,

20 terminating in a two-compartment spout 3l,

"- which serves to catch'the water and material Adischarged from thetreatment vessel and flow them from the separator.

The weight ofthe treatment vessel is prei` erably carried by a rollerbearing 32,;'011 which the lower end of the hub 7 isA seated, thebearing being mounted on the upper-.end

of the journal box 10. i

` 'Ehe lower'end of the vessel is,pret`erably,

'30- somewhat enlarged danietrically fora cornparatively short distanceof its length, as

'- Ishown in Fi'g. 1, making an internal annular recess or chamber 38.This chamber communicates with a row of nipples 34, threaded '35 throughthe Wall oi the vessel around-the outer vcircumference of theenlargement, which nipples are provided with small holes 'or openings 35for the'discharge of material v.and water from the vessel. l/Vithin therc? '140 cess or chamber formed by said enlargement Of the vessel 'Iprefer to provide a suitabl'f' shaped ring 36, containing a series oi tumieli# shaped depressions or pockets with lar c .openings nearest theaxis, and outwardy '45. converging to small o enings :ee'iste'ring lwiththe discharge ni )pl es 34, as s vown in "Fig 1. The object o thisenlargement and, lthe charnbered ring is to facilitate the discharge ofmaterial and water and to prevent 5 0 undue lodgment of parts of saidmaterial at thipvpoint. I ithin the treatment vessel and to operate inconjunction with it and its separating surface and form with such vessela separating l5,5 or concentrating channel 37. 1 provide adifferentially rotatable longitudinally-travelable cone or core 38,which i will call a deflector. This ,deflecton as will be seen,preferably 'forms the .inner wall of the 'said separating, o'channel. p1 f The u per end or head of the delector 39 is '.pieerab yin the natureof a plate, of desired size and irregular form, as illustrated. 1t isWellsecured at its outer circumferential por- .vided with suitablevalves or stop coclrs 44.-, `which may be used to stop the low' of waterl central part.

.a comparatively iiat ring, andI has a the separator is in a quiescentstate.

e; tion 4in any suitable wayeas by tap-boltsto that end of the deilectorwall, and at its central portion has a substantial hub 40,' iixedlyengaging the shaft 8, as shown in the drawings. i is depressed inward-asshown in Fig. 1 9 am desired distance and for a suitable diameter saiddepression having preferably a depth somewhat greater than the distanceof longitudinal travel of the deflector. lAround the upper outercircumferential edge of and within this depression I provide a ring 41,extendingsutliciently/in over the depression to form an annular waterchamber withinthe depression. l prefer vthat the ring 41 should at itsinner bore be ilanged vlor extend upward a desired distance above theupper surface of the head to prevent water introduced into the separatorfor other purposes from flowing into the depression. f

The chamber in the depression of the upper vhead has a desired number ofwater pipes 42 communicating with it, which extend ydown into thedeiiector a desired distance, asv

illustrated, and preferably have several branch pipes 43 connected tothem, 'which 90 are secured in appropriate holes or passages 43 throughthe wall of the deflector, opening into the separating channel. In thislway Water can be yHowed or forced under the im'- pulse ofcentrifugal-enemy, frorn'the de ression in the upper head ot thedeflector, own through the said pipes, and out through the 4'lowerportion of the circumferential lwall of the deilector into theseparating channel.

' The several pipes 43 are preferably pro-100 through any desiredpre-determined or particular ones of these pipes, enablingthe water to`be delivered into the separatin r channel at the desired andpre-determined distance from the lower end of the separating surface,

for removal of iniddlings, as hereinafter described, thereby governingthe longitudinal extent or distance on the lowerl end. of the separatingsurface, from which said mid` dlings will be separately removed anddischarged from the separator.

he lower end of the deiiector is provided with a head 45, more or lessopen toward its lt has its outer circumferential portion, for asuilicient distance toward the center, preferably inadelin the nature pfsu` stantial hub at its central portion, the hub and ring portions beingsolidly connected by spokes, leaving' a sui'licientspace between t em sothat in a large separator the operator can enter into the deflector, ifdesired, when '125 The ring'portion of this lower head at its outercircumferential portionis securely fastened to the lower end of the Wallof the dellector, and its hub portion is elevated or raised upwardsuihciently above the ring por- This head, near its central part, y

sanear tion lto make desired room for other partel of i the separatoraround this zone, as illustrated.

,The hubs of the up er and lower heads of theA deiiector are rigid ysecured to the shaft 8, so that they hold the deilector in suitable"relative positionsl in the treatment vessel,

- or chamber 33 inthe enlargement at the dis-v and not only rotate thedeector with the' shaft, but travel it longitudinally with said shaftwhen theshaft is so traveled, as hereinabove explained.

The circumferential wall of thedeflector is preferably made of amplystrong but comparatively-thin metal, similar to the wall of thetreatment vessel. It serves best when made of length to extend oversubstantially all of the separating 'surface while in a ositionfnearestthe feed or small end o the treatment vessel, and -thenalso to extend' ashort distance beyond or below the op osite end of such surface, yetleaving room or its longitudinal travel, a distance substantiallyequivalent-to the width of the enlargement charge end of the vessel,thereby insuring tire length of the separatingsurface.

- shape to su that the deilector at all times covers the en- The outercircumferential walls of the deflector are, referably, made smooth andof lgstantially conform to the shape or contour of the se aratingsurface, but somewhat smaller in iameter, so that when ,the deflector isin position nearest the small or feed end of the treatment vessel therewill bev a comparatively'small annular space or i unoccupied space insaid smallor feed end,

which permits a partof the unseparated material, as it is introduced, tolodge or pile u in this unoccupied part of the vessel, whic condition isvery objectionable because such oro unseparated roduct,wh'en theconcentrates are periodica ly removed during the/cycle of operation, isalso removed and commingledl with the concentrates, rendering. themoflower gradeand increasing theirquantity, and consequent cost of'smelting or other subsequent treatment. ATo. overcome this difficulty lhave provided a feed chamber or passage 46', of constant size, locatedin a position radially outside (if the small e'nd'of the deflector, andpreferab y extending from the feed end of the `vessel a somewhat greaterdistance than the extent or distance of lon itudinal travel of thedeflector, vso that t e small end of the deflector will at no time be sogreat a distance from the feed end of the vessel as is the delivery endof said feed channel, throu h which material for separation passes beore it reaches the separating channel, and the separating surface isformed.

in part by the travelable deflector. ln this Way the small end'of thedeflector is referably at all times, to a greater or less egree,

- in a telescoping statewith the said feed channel and the dpartsforminor it. l preferably form this fee channel, as iustrated 1n Fig. 1

.of the drawings, by em loying a part 46, somewhat in the nature o acomparativelyshallow secondary vessel with an open bottom and' with asuitably sized hole in its top, and

having theborder portion around said hole or opening suitab y swagedoutward, as illustrated, `to serve as means by which this secondaryvessel ortion maybe secured by bolts, or 1n other esired and suitableway, to the linside of the upper head of the treatment vessel--asillustrated inFig. l-and at the same timeto hold 'the bottom of theseeondary vessel portion sufficiently away from the head to form aradial space or channel 47 between them, communicating with the feedchannel 48. The circumferential wall of this secondary vessel ispreferably ofthe form of the wall of the treatment vessel andsufliciently smaller in diameter than the corresponding part` of suchwall, when the seconc arv vessel is 'secured in'place, to form the saidc annel between the outer eircumferenfeed channel shall not be ofgreater diameter than that of the adjacent or connecting part of theseparating surface, so that the material in flowing from this channelinto the separating channel or on the separating surface, within theseparating channel, will not be forced to move towards the axis ofrotation against the action of centrifugal force.

ln my preferred arrangement l approprie.

ately form the feed end of the eeflector smaller than its other` parts,as shown, to telesco le with slight clearance inside of the-secon aryvessel 46, and from the fact that the secondary vessel forming the innerwall of the feed channel 48 is longer than the extent of longitudinaltravel of the deilector, the latter is at all times to a. greater orless degree telescoped into the secondary vessel,` .so that material fedlinto the separator down through the feed channel 48. and into theseparating channel 37 has little tendency, eXce t dirty water, to flowback vtowards the fee end'v of the vessel into the unoccupied'spacecaused by the travel ofthe deflector. As means for s', preventing thebaclrward'iiow of said dirty water in this space, and the resultantprecipitation and deposit hereof some ofthe so id matter that said watercontains, l provide .a suitable annular clear water-receiving chamber49, located on the top head or end of the vessel, and provide a means ofsupply- 'ing clear water to it, as by an appropriate pipe 50, and l alsoprovide holes or channels 51 from said chainoer, communicating 'with thespace in the vessel between its feed end and the small end of the'deflector,l and during operation clean water can be introduced 4matterfrom flowing up into, or baci; into this unoccupied space between thefeed end of the vessel and that end of the dellector. The supply of thisclean water niay be from a lsufficiently elevated tank or other suitablesource to enable it to flow by gravity into the chamber 49 and itsvolume dr quantity lmay be governed by'any suitable means, as

a valve 52, which 'may be located .in the pipe 50.

To enable the vintroduiction or feed of niaterial into the separator,V.l form or provide a suitably shaped, properly located annular 'chamber53 on the upper head of the treatment vessel, with holes or passages o4err.- tendingfromit down into thc space 47, to ass into the feed channel48. l also provide acilitj/,as a suitably shaped feed casting 55,registering with the annular opening in the upper side of the chamber5.3; and lf connect said feed casting to a suitable feed prie 56, whichcommunicates with any suitable source of supply of properly coininingledwater and material for separation. The ilow of the said comminglcd waterand material maybe governed by a valve 57, which may be laced in thefeed pipe. in this feed pipe l a so preferably connect a branch. pipe 58for sup )ly of clean water when the flow of materiali for separationtemporarily discontinued and it is desired to remove accumulatedconcentrates;

On the upper head of the treatment vessel, nearer the axis than eitherthe chamber 4Q or 53, ll provide `an annular water-receiving chamber 59,suitably located to supply water,

when desired, doivn into the depression 'in the u per head of thedefiector. From. this chamber 59 l provide holes or channels. 60 throughthe upper head of the treatment vessel, located. in positionto deliverwater down intothe depending ring or flange 6i., which is of size and inposition to telescope down into the depression in the upper head of thedeiiector and deliverwater trom. the

sensei holes 60 into said depression, from-Which said water flows,actuated by ravity-and centrifugal force, down through liliepipes 42,`and through the predetermined ones of .the pipes 43, depending uponwhich of said .pipes nas its stop cocks or valves 44 open,and

effects removal of middlings to the extent l desired.

The depending part or flange 61, "like the part 46, is somewhat lon erthan the extent of longitudinal travel of t e deiiector, so that at alltimes. it is telescoped to a greater-or less extent into the depressionin the upper head of the' deflector, and so that water will be properlydelivered by it into said ldepression.

i supply water to the chamber 59, in the l upper head of the deilector,by means of a 'fixed pipe 62 with a suitably shaped end to make deliveryinto the annular o ening in the upper side of this chamber, as iliistrated. The flow in this pipe can be from any suit-l able source ofsupply and can be governed by a suitable valve 63, that may be placed`in the pipe.A This clean Water is for use only' when it is desired toremove mlddlin s, at which time the flow or introduction o teria] forseparation is discontinued.

ln Fig. 4 have-shown in enlarged detail'a part ofthe feed end ofthetreatment vessel and deflec'tor, and some other' parts, illusthe meansof holding to place Ithe 64 engaging said flanged or swaged .portionaround the opening in the bottom of said secondary vessel. This ringiitssufficiehtly/ tight to maintain the secondary vessel in place, butat the ysaine time to permitvof its rotary movement with respect to thetreatnient vessel. This rotary movement is more or less effected by theimpact or resistance' of material and water to assume faster rotation asit is introduced into the space 47, between the top end of the secondaryvessel portion. 46, and the head of the treatment vessel 'so that saidsecondary vessel portion in that way is revolved differentially to thetreatmen t vessel and the deiiector.

lnFi-g. 4 l haverl also shown in dotted lines the deflector in positiondrawn to its fullest vessel, at which time it will be seen that it. is

in its minimum telesco ed state with the,`

secondary lvessel 46, an is also in position to leave the greatestamount of unoccupied vtion the heavier, lricher, or cleaner, parts ofthe concentrates will lodge and .accumulate nearer the feed end 'of these arating surface,

and the lmiddlings, oru less' c early separated vextent from the feed-end of the treatment parts, willlodge and accumulate nearer .the -4discharge end of'theiconcentrating surface, which is `throughout thearearadiallycov:

iso

ceneri' 43 in their differential rotation to the se al'rating' surfacethrough the Walliof the vde ecvao' . reducing the separating-channel totor into vthe separatmg channel.

In operation, the treatment vessel is revol'ved at the'desired speed byuse of a belt that may be operated around its belt surface 65- 'Fig.1and the defiector is also revolved' by use of a belt that may beoperated around its pulley 66,. but at a desired differential speed tothat ofthe treatment vessel. l

Initially thedeflector is "noved up in the .vessel to its fullestextent, or to the small end of the vessel by its supporting shaft,thereby proper size for. commencement of concentratlon or separation,`and theseparating period may commence. The material to be se aratedWhile in a finely pulverized state an mixed i with the desired amount ofwater to make it fioW freely is then fed into the separator inquantities to fill the se arating channel and provide a sufficient bo yof water Within the' vessel, preferably frornafsuitably elevated.agitator tank (not shown) through its branch the feedipe 56, and passesinto the treatmen-t vesse and separating channel throu h the agencieshereinabove described, t 1e heavier parts, or the concentrates, lodgingon theseparating surface and being retains there 1n the separatingchannel` nearer the l feed end {while the lighter, or waste vpart and`sired.

the middlings are forced or driven along by the water within theseparating channel, the formerto discharge and the latter to lodgmenttoward or nearer the discharge end of the separating surface. Thewashing or scouring action of the water which effects separation in theseparating channel is princip'ally governed by the amount of.differential rotation between the treatment vessel and the deiector,which is during concentration adjusted properly towash ofi` and more theIlighter lparts along to discha e, but yet to permit t e heavier partsto lo ge and accumulate on the separating surface, as de- As theoperation roceeds and the accumulation or accretion orms in the channel,the latter would soon become too much contracted or filled, if therewere no compcnsating agency; and to meet this require- -ment during theconcentrating or se arating fullest extent toward the largerend of thevessel, the feed of material for separation is discontinued. The speed`of the vessel is preferably reduced as desired. The valve in the cleanwater supply pi e 62 is opened, and such water is iiowed own' or isdriven through the agencies hereinabove described down into the pipes 42and through their passages in the deflector-wall into the lower portionor middlings zone of the separating channel, by which means middlingsare first removed and discharged from the separator. This accomplished,clean water is introduced from the branch pipe 58, and the defiector,through the reverse endwise travel of its shaft, is again moved orAtraveled up to its initial position in the small end of the treatmentvessel. rIhe deflector during such up- Wardtravel, assisted-by the Waterbeing in-l troduce'd, removes to discharge the accumulated concentrates,.or most of'them. Theremainder soon follows before the s eed of thetreatment vessel is incre'ased. T e supplly of Water by the pi e shouldbe stopped uring unloading of mi dlings.

After the removal of concentrates has been accomplished, the deflectorthen having reached its initial osition, the vessel is again raised toits speed) ap ropriate for effecting Lconcentration, and t e separatoris then :again ready for feed of material for treat` ment. Y

In the specification and claims Where I have stated that the length ordistance of a i part is substantially as great as the distance I oflongitudinal travel of the deiiector, I do not mean to limit suchdistance to the dis- ,I tance of travel of the deflector, as the formerdistance may, without bad result, be considf erably greater than thcdistance of longitudinal travel of the defiector.

What I regard as new and desire to secure by Letters Patent is:

1. In a centrifugal ore separator, the combination of a rotatable-vesselhaving a separating surface, a differentially rotatable'longitudmallytravelable deilector forming one wall of a se arating channel interposedbetween said' eflector and surface, the vessel being provided with alnaterial feed passage communicating with the separating channel adistance from the feed end of the vessel substantially as great as thedistance of longitudinal travel of the deiiector, having its inner Wallaless distance from the axis than that of the adjacent part oftheseparating surface, and means for feeding material for separationinto said feed passages.

2. In a centrifugal ore separator, the com l a distarice from the feeden substantially as great as the distance of longitudinal travel of thedeflector, having its inner wall a less distance from the axis than thatof the adjacent part of the separating surface, the deflector in partforming a water 'passage at the circumferentialv portion of its smallend communicating from between t-he small end of the deflector and thesmall end of the vessel to the separating channel, means for introducingwater into the vessel between the small end of the deflector and thesmall end of the vessel, and means for introducing material into thematerial feed passage:

3. ln a centrifugal ore separator, the combination of a rotatable vesselhaving a separating surface, a differentially rotatable longitudinallytravelable deflector with a channel .interposed between said 'dellectorl and surface, a portion within the small end of the vesselv formingpart of a feed passage in substantially extended` alinement with sainseparating channel and communicating therewith a distance from'the smallend of the vessel substantially as great as the distance of longitudinaltravel of the deflector, the small end of said deflector adapted tetelesco )e Within said portion in the small end of the vessel, the twoforming a passage between them commu nicating from between the small endof the deflector and the small end of ythe vessel and the separatingchannel, means for introducing Water between the small end of the vesseland the small end of the detlector,

. and means for introducing material for separation into the materialfeed passage.

4. In a centrifugal ore separator, the combination of a rotatable vesselhaving a separating surface and an enlarged portion of desired'length atits discharge end, a differentially rotatable longitudinally travelablederlector in said vessel forming onewallof a separating channelinterposed between said deiector and the se arating surface, aportionwithin the smal end of the vessel form ing one wall of a feed passagesubstantially in extended alineinent with said separating channel andcommunicating therewith a distance from the snall end of the vesselsubstantially as great as the distance of longitudinal travel 'of thedeflector, the small lend of y said defiector'adapted to telesco ewithin lsaid portion vin the small end of t e vessel,

ssc/,sai-

`bination of a rotatable vessel having a separating surface, adifferentially rotatable vl ongi-n tudinally travelable deflectorsaiddeflector and vessel forming a 'separating channel in-y terposed betweenthem, material feed means4 j adapted to have the small end of said rde-lHector telescope into part thereof and adapted to deliver said` materialinto,the separating channel-a distance from thefeed end of the vesselsubstantially as great a distance the distance of longitudinal travel ofthe defleetor, the telescoping l'part of the deflect-or and saidfeedmeans having a. passage between themfrom thesmall e1 of the vesselto the separating channel, a'nd means for introducing water into thesmall end. of the vessel.

6. ln a centrifugal'ore separator, the com bination of a rotatablevessel having a Serfarating surface, a differentially rotatable longitudinally travelable deflector forming one wall of a separating channelinterposedbetween it and said surface, material feed means adapted tohave the small end of thes defleetor telescope into art thereof andadapted to deliver materia into the separat-` ing channelsN distancefrom the feed end of the vessel substantially as""great as the dis'-tance of longitudinal travel of the deilector,

the telescoping part of the deflector and said feed means having apassage between tl'ieni' from the small end of the vessel* to theseparating channel, means for supplying material into said feed meansJand for supplying water into the small end of the vessel irrespective ofsaid feed means" and for removing middlings separately through theinstrumentality of Water from a predetermined desired part of theseparating surface.

7. In 'a centrifugal ore separator, the com'- hinaticn of a rotatablevesesl having a sepan` rating surface, a differentially rotatable longi#tudinally travelable'defleetor forming one wail of a separating channelinterposed between said defleetor and" surface, a portion' Within the.feed end of the vessel forming in part a material feedpassagecommunicating' with the separating channel a distance from thefeed end of the vessel substantially as great as the distance oflongitudinal'travel of the deector7 the small end of the deflector beingadapted to'telescope with said.

ee'aafii of the deiector, said deflector being of length to at all timesextend over substantially all of the separating surface and have itssmall end telescoping into said portion in the vessel, forming a passagefor ilow of Water p from the small end of the vessel around saidtelescoping end of the dellector to the separating channel, means forintroducing material for separation to said feed passage,

and means for introducing Water between the small end of the Vessel andthe small end of the dello/eter.

9. In a centrifugal ore separator, the combination of a rotatable vesselhaving a se arating surface and an enlarged longitudina ly extended)ortion at its discharge end, a dilferentlally rotatable longitudinalltravelable dollector of length to at al times cover substantially all'ofthe separating surface and adapted to form one Wall of a separatingchannel adjacent to said separating surface, a portion Within the smallend of the vessel forming one wall of a material feed passage adapted todeliver material to the separating channel a distance from the feed endof the vessel substantially as great as `the distance of longi tudinaltravelof the deiector, the small end of the deflector being adapted totelescope into the said portion in the vessel leaving a passagecircumferentially around said end of the deiector communicating from thesmall end of the vessel tothe separating channel, means for introducingmaterial for separation into the material feed channel, and means forintroduction of Water between the small end of the deliector and thesmall end of the Vessel. l

PHILIP F. PECK. Witnessesz- MELINDA PECK, W. H; PEcK.

